摘要:
An optical communication device includes a light source that emits a light beam and an optical fiber having a core and a cladding. The optical fiber has a light entrance face having a core region and a cladding region. The light beam emitted by the light source is converged by a converging lens on the core region and is transmitted through the optical fiber. The entrance face is configured to generate a light intensity distribution in light reflected by the light entrance face depending on a position where the light beam is incident on the entrance face, a converging lens arranged between the light source and the optical fiber.
摘要:
An image signal processing device for processing an image signal transmitted from an imaging unit by radio is provided. The image signal processing device is provided with at least one antenna that receives the image signal transmitted from the imaging unit by radio, a substrate, and a plurality of 2D-DST elements arranged on the substrate. The plurality of 2D-DST elements include a plurality of receiving elements each of which includes a processing unit having functions of receiving the image signal and processing the received image signal. The plurality of receiving elements are connected to the at least one antenna. At least a part of the plurality of receiving elements contributes to time-division multiplexing of receiving the image signal and processing the image signal.
摘要:
A method of manufacturing a master of an optical information recording medium includes a resist layer formation step of using a resist to form a resist layer on an upper surface of a substrate, an exposure step for selectively exposing the resist layer to cause a change of state in the resist layer, and a development step for performing an alkali development process on the resist layer after the exposure step. The resist is primarily composed of an inorganic material and contains at least Te and O, and further contains a stabilizing additive having a lower solubility than TeO2 in an alkaline environment.
摘要:
A video-type stereoscopic microscope is composed of a close-up optical system which emits object light rays from an object as parallel rays, a pair of zoom optical systems which converges the object light rays having passed through different parts of the close-up optical systems and a relay optical system which relays images formed by the respective zoom optical systems to a CCD. Zoom lens barrels which hold the respective zoom optical systems individually are fixed in a zoom housing such that the position thereof can be adjusted in the axial direction. This zoom housing is fixed in a casing of the stereoscopic microscope such that the position thereof can be adjusted in the direction of the optical axis of the close-up optical system.
摘要:
A water-cooled, two-stroke crankcase compression internal combustion engine for powering a motor vehicle. The engine includes a piston, piston rings, and cylinder bore arrangement that are constructed to inhibit piston ring sticking by cooling the piston ring gaps by holding them against rotation and spraying fuel from a fuel injector toward the gap for cooling it. Overheating of the small end of the connecting rod is inhibited by surface treating portions of the piston to render them harder and less heat conductive. Scuffing of the piston, piston rings, and cylinder bore are reduced by surface treating the area of the head of the piston around the ring grooves so as to trap and retain lubricant. The surface treatment includes the steps of utilizing an acid wash to dissolve and remove silicon particles and subsequently alumitc treating the washed area.
摘要:
A vortex flow blower including a blower casing having an annular flow passageway extending from an inlet port for receiving fluid to an outlet port for discharging the fluid, the outlet port being disposed adjacent to the inlet port, and an impeller accommodated in the blower casing for producing a vortex flow of the fluid in the annular flow passageway. The vortex flow blower is configured for enabling at least one of noise reduction pressure increase and reduction of power requirements of the vortex flow blower, by providing at least one of sectional area reducer for reducing a sectional area of the annular flow passageway which annular flow passageway includes an annular groove disposed in facing relation to vanes of the impeller, and a partition wall partitioning a part of the circumference of the annular groove so that the inlet port and the outlet port being provided at opposite end portions of the annular groove partitioned by the partition wall with the sectional area reducer is disposed at a position of the annular passageway located between the outlet port of the annular passageway and a midpoint between the inlet port and the outlet port of the annular passageway, and an auxiliary flow supply path for supplying an auxiliary flow of the fluid introduced to the annular flow passageway from the inlet port so as to conduct the fluid in a direction to form the vortex flow.
摘要:
A ball joint for use in motor vehicles comprises a bearing member (7) made of a plastic material and disposed between a joint housing (1) made of a plastic material and a ball head (3). The bearing member has projections (10) on its outer surface that engage undercuts (11) on the inner wall of the joint housing. The joint housing (1) is simple to produce. The bearing member (7) is prevented from rotation with the ball head. To this end, the undercuts (11) are formed as circumferentially extending boundary walls of axially extending grooves (13) which open at one end (14) of the joint housing (1). The projections (10) on the outer surface of the bearing member (7) engage the circumferentially extending boundary walls of the grooves (13) and the radially extending side walls thereof.
摘要:
A sewing machine includes a spool pin stand having spool pins to which thread spools are attachable and seats corresponding to the spool pins, respectively, thread passage defining members located on a thread passage, a sewing data storage unit storing sewing data including at least thread color information about colors of the needle threads, thread supply display units which are located on the spool pin stand so as to correspond to the spool pins respectively, the thread supply display units being configured to produce light which transmits through at least ones of the spool pins and the seats and displaying the thread colors in a color-variable manner, respectively, and a thread color information control unit controlling the thread supply display units based on the thread color information so that thread colors corresponding to the spool pins are displayed by the thread supply display units, respectively.
摘要:
The present invention provides an apparatus for fabricating a multi-layer information recording medium including a substrate, plural information recording layers placed on the aforementioned substrate, resin intermediate layers placed between adjacent information recording layers and a resin protective layer placed on all the information recording layers at the side opposite from the aforementioned substrate, the apparatus including an ejecting unit including ink jet nozzles operable to drip minute resin liquid drops onto the aforementioned substrate or the aforementioned information recording layers; and a control unit operable to control the aforementioned ejecting unit, whereby resin layers which form said resin intermediate layers or said resin protective layer are formed on the aforementioned substrate or the aforementioned information recording layers.
摘要:
There is provided a method of manufacturing a conductive layer of in a signal transmission substrate. The method includes sewing conductive thread in sheet-like material having an insulating property so as to form one of a plurality of low resistance regions using the conductive thread in a high resistance region formed by the sheet-like material, moving the conductive thread from an end point of a previously sewed low resistance region to a start point of a low resistance region to be sewed subsequently, repeating the sewing and moving steps to form the plurality of low resistance regions in the high resistance region, and forming a plurality of holes in the conductive layer by press working so that an electrical component attached to at least one of the plurality of holes is able to transmit a signal between neighboring ones of the plurality of low resistance regions.